She is his girl friend．(改為否定句)

　　She ______ his girl friend．

These aren’t his brothers．(改為單數(shù)形式)

　　______ ______ his ______.

That is my grandfather．(改為一般疑問句)

　　______ ______ ______ grandfather?

This is a book．(改成復(fù)數(shù)形式)

　　______ ______ books．

These are my aunts．(改為單數(shù)形式)

　　______ ______ my ______．

That is his sister．(改為復(fù)數(shù)形式)

　　______ ______ his ______．

He is your friend．(改為復(fù)數(shù)形式)

　　______ ______ your ______.

Is this your brother?(作否定回答)

_________ , ________ __________ .

Guo Peng is a boy．(改為一般疑問句)

　　______ Guo Peng a boy?

My name is David．Gina is my sister．I am her ______．